Arc-lamp.



W. G. HOUSKEEPER.

ARC LAMP.

APPLIGATION ULEB 'ULY e, 1808.

Paten'eo'l Apr. 13, '1909.

ieng'ageinent byv nieans .of a cclutch WILLIAM G. HOUSKEEPER; OF WlLlilNSBUHG,

HOUSE ELECTRIC MANUFACTURIXG COMP PENNSLl/ 'ANI'A, ASSIGNOR TO WESTING- AN Y, A CDR TORATION OF PENNSYLVANIA.

ARC-LAMP.

Speci fication of Letters Patent. I

Patented April 13, 1909.

Application filed `Tuly 9, 1906. Serial Nio. 825,314.

To all whom it ma'y concern:

Be it known that liniami G. lloisitnnrnn, a citizen of tlie Uiiited States, and a resident lof lVillrinsbnrg', iii tlie county of Allegheny and State of Pennsylrania7 have invented a iiew and useful lmproreinent iii Are-Lampe`` ofwhich the following is a specification. i

My invention relates to ai'c lanips, and particularly to those in which one or botli electi'odes contain' insnlating-oxids or componnds.

The object of myinvention is lto provide simple and effective means for iiisuriii;r ready establishinent of the ares in lainps of tlie character indicated.

- One or botli electrodes of ai'c lamps are 4freqnently coinposcd of the magneticv oxid of iron, which is a conductoi', and the oxids of titanium and chroiniuin, wliicli are in `snlators wlieii cold, tlie tornier beingl cinployed to give desirabl'e color characteristics to the arc,' and tlie lattei' to increase the life of the electrodes. ln the operation of such lamps, insiilating fuincs, eomposed principally of the non-conducting oxids, oc- 'asionally condeiise and deposit upon parts of tlie electrodes, aiid insulating` or high resistance slags often form upon the che trodes, good electrical contactbetwecn the electrodes being thereby prevented and ready establishnient of an arc interfered with.l I t According to the present application, l

propose to causethe electrodes to move ra p-- .i'dly into 'fumes or tlie slag are removed oi' until a and out of engageinent until the sutliciently ,good electrical contact between the eleetrodes i's efl'ected to enable establisliment of the are.

Fignre 1 of the aceompanying drawings is a view in perspective of a device that may be applied to an arc lainp to enable to operate in accordance witli by in'vention, and Fig. 2 is a diagrainmatic view of the circnits of an are lamp 'to which the inventioi'iis applied.

Electrodes 1 and 2 of' an arc lanip,' either oi' both of which may bo coniposed of the o xids above specified or of other suitable materials, are normally inaintained'out of The cliitch is adapted to be operated by means of a rod '4, the upperteiid of wliich is seciired to) a niovable niagnetizable core 5 of an '22 aiid 23 'that scrve -19 may be maintaiiied in'- nuts 22 and clectro-niagnet Winding 6,-tlie core 5 being noi'nially supported in its nppermos't position by means of a sprint` 7. The electroniagz'nct windiiigr G is arrang'ed in series witli a suitable resistance S between one terminal 9 of the lamp and astationary contact terminal 10, an minal 11 beini` connected to terminal 12, of the lamp. Contact terininals 10 and 11 are adaptcd to bc connected by iiieans of either the onc oi' the other of two niovable switch members IP) and 111, the latter of which is noi'inally out of engageiiient therewith. The switch member 13 is provided with an operatin ni'ag'nct wi-nding' 15 that is con'i 9 and sei'rcs to more the switch iiieiiiber 14 adjaceiit stationary contact:l terto the el'ectrodes 1 and" into cngag'c'mcntwith tlic contact tei'niinals 10 and 1l when the ditfereii'ce in potential between th clcrii'odes l and 2 i'ises above a predctei'inincd liiniting' value.

The electro-magnet winding 6 is adapted to be shuntcd by means of a device that ('oinpi'iscs a lstationai'y coi'itact terminal 17 and a inorable tci'niinal 18 upon the lower end of a i'od 1h that is ii'ioniitcd so as to be capable of a i'cciprocatiircr inotion in guides 20 and E21. The iiiain portion of the i'od 19 is Iscrew-thrcadcd for the reception of vnuts as stops, lock iiuts 21 being provided for the purpose of securil'ig the stops iii position. lii order that the i'od any positioii to which it. may be moved, it firmly against thegnides by ineans of a spring' thatis interposed between the upper' end thereof and a stationary'I post 26, or any other suitable means may .be employed. The portion of the rod 19 between the stop ''is einbraced'by the forked ends of two ariiis 28 and 29. The arm 28 is secni'ed to the movable magnetizable core 5,

aiid ;lie arm 29, which is more flexiblle than the ai'in 28, is secured tliereto. i

then current is fii'st supplied to the lamp, it ti'arei'ses the resistance 8, electroinagnct. winding (i, aiid switch member 13`I which roccupies che position shown in Fig.

ifii'iergizng of the eiectro-znagnei) wind.-

eaiises'. the core. to he drewn downD ford in oppostion 'w 'zhe 'cension of he rng 7 end the' eiectrode 1 is time caused engage the eiectrode 2. the ends of e eiectrodes are Whoiiy pertieiiy covr i'sh high resistance eiag 'or With infdeposisiheh ornied during ;ion ihelamp, i-he resistance of the may be eo os to prevent esiebien of en ero. .Hoievexg movemeni of je :'nziznet :ore 5 ,don'nwerd :dso canses 'he F'terminal 18 io engegethe tern'ii'iai h. rw.

4, end 'che eieciro-niegnei Winding 6 is ierehy ehinited and the core end the 1 3 ziredrewn npwerd by 4`the spring T e ripwerdmovemen of the core 5 aiid the n 29 that is carried thereby cnuses disenO 'flgement of the erniinais 17 and 18 and ihe eiectro-niegnet windng 6 again becoines energized. Energizing oil. the Winding 6 ein censes downward niovenent of the end' the eiect-rodes Wiii be caused to ;e :eg-ein, emi i'ho eiectrcdes 1 and 2 oe ;nova-d into' end oni; of eng'figement' n cech other' in rapid Snccession until o reeisence eiectriceiV contact between eieetediv A Circuit then estnh,

he" terzninei-9 ihrongh cieci end operezing magne wind' 'switch member Li, therenpon d from ihc sia-` .The circuit of the'refby iniid' 2 are co and en ero estuhhed. ri'fhe i eoninne to operete'nntii the difce in potential heween 'the eiecrmiesv e'xceeds the 'laredelerinined liniiigingr which' the inngnct Winding' 16 heconvm snfiicieniy energized to ceneo moveof the swii'ch member li into cngege- 1 with sinionry contact iermina'is' `10 *i p The circnii, of the eiectro-mngne winding ii being thereupon established, the eiecirodes 1 and 2 will a .ain be 'bron engngement `and the fee mg ofthe e ectrode -1 Will cccura-'fter which the electrod'es will be again separated and the lamp Will coniinuc to operni'eas before.

While the invention has been shown and p l. In nn arc lamp, the combination with.

normaiiy separeted electrodes, and an electro-magnet for causing. the same to engage, 'of a. swltch arranged ln shnnt to the electro-nmgnet winding, the mova-ble member.

and :m actnaiing arm carried by the' armatnre or core of smd electro-megnet and adapted to engage the stops on sznd movabie switch member.

` 2. in nn are lamp, the combination with normaiiy separated eiectrodes and an eleci'ro-magnet Jfor causing the same to engage, of eewitch arrnnged in Shunt to the electronmgnet winding the movabie member of which is provided With adjusteble Steps, in :ictuating ernr carried by the armnture or core of said nnignet and edapted to engage the stops on Said movable switch member, and m *ans for retain'ingpsaid movable switch member in any posltion to which it may be moved.

in iestmiony `Whereof, I have hereunto subscribved my name'i'his 28th day of June,

W i LL'IAM 1G. HGUSKEEPER. ii'itnessesz O'r'ro S. Sonennni, 'Bnin-BY Hmns.

rht intov ,of which is provided with adjustabie Steps, 

